The color of a substance is a physical property

Explain why secondary succession usually occurs more rapidly than primary succession.

An ideal gas at temperature t0 is slowly compressed at constant pressure of 2 atm from a volume of 10 liters to a volume of 2 liters. then the volume of the gas is held constant while heat is added, raising the gas temperature back to t0.

Nuclear winter story. A crazy president is trying to solve the global warming problem and has successfully built a powerful H-bomb.

Which could be a source of emf in a circuit? A. copper wire B. light bulb C. solar cell D. switch

The placebo effect happens when: O A. an individual is affected by the experimental treatment. O B. an individual participates in a survey and changes his or her behavior. O C.

Which of the following statements best describes the importance of investigations in science

Which element has a complete valence electrons hell?

3. If you are part of a center or network, you can use program-level data to A. change the way you record and maintain information. B. identify professional development needs. C. improve the management systems to support child learning. D.

What did James Madison foresee as an important element of the political system? a. Hyperpluralism b. Social movements c. Interest groups d. Lobbying

Which force is responsible for the formation of waves? A. gravity B. wind C. friction D. centripetal